Automatic road-gate.



No. 69l,363. Patehted Jan. 2|, I902.

- JAE. DE LAMAR.

AUTOMATIC ROAD GATE.

(Application filed'June 8, 1901.1

(No Model.)

UNITED STATES PATENT OFFIGE.

JAMES EMANUEL DE LAMAR, OF DALARK, ARKANSAS.

AUTOMATIC ROAD-GATE.

SPECIFICATION forming part of Letters Patent No; 691,363, dated January21, 1902. Application filed June 8, 1901. Serial No. 63,735. (N0 mOdcLTo all whmn, it may concern:

Be it known that I, JAMES EMANUEL DE LAMAR, a citizen of the UnitedStates, residing at Dalark, in the county of Dallas and State ofArkansas, have invented certain new and useful Improvements in AutomaticRoad- Gates; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention is an automatic farm-gate; and it consists of means forautomatically opening and closing and latching and unlatching said gate.

In the accompanying drawings, Figure 1 is a perspective View of myinvention with the gate closed. Fig. 2 is a top view of the plate,

pulleys, and ropes used to operate the gate, the top plate beingremoved.

My invention is described as follows:

1 represents aprons which cover part of the roadway, lie flat on theground, and are secured in place. Rising from one end of each of theseaprons is an upright post 2, and extending inwardly from the top ends ofsaid posts are braced arms 3. These arms extend to about the center ofthe roadway and have depending from their free ends pulleys 4. Theaprons l are provided with slots 5 near the posts. Journaled in thewoodwork on which said aprons rest are cylinders 6, and risingperpendicularly from said cylinders and rigidly secured thereto arepedals 7. These pedals may turn forward or backward, and rigidly securedto the outer'ends of the cylinders 6 are levers 8. Secured to the innerfaces of the posts 2 are pulleys 9. Situated on the aprons 1 and beyondthe pedals 7, reckoning from the gate, are cone-shaped spiral springs10, and when the pedals 7 are pressed down on said springs they (saidsprings) are pressed down fiat, and when the pressure is removed thesprings throw the pedals and the levers into an upright position or alittle beyond an upright position.

11 is the rear gate-post, to which the gate is hingedr 12 representsbraces.-

13 represents stop-posts to stop the gate when it is swung back on aline with the roadway.

' a right-angle triangle lever 29.

14 represents beams attached to the braces 12 and stop-posts 13, eachhaving on its outer end latch-holders 15.

16 represents the rear perpendicular rails of the gate. 17 representsthe front perpendicular rails of the gate. Secured between these rails16 and 17 are horizontal bars 18.

19 represents braces.

20 is the latch-post, and on the inner face of the latch-post is secureda latch-keeper.

Secured to the upper ends of the perpendicular slats 16 and to braces 26is a frame 27, in which are horizontally secured pulleys 28, and to theupper bar 18 of the gate is pivoted To the forward end of this lever'arepivoted two upright bars 30. To the lower end of these levers 30 ispivoted the free end of a latch 31.

The rear end of the latch is pivoted between the braces 19, and to theforward end of the latch 31 is secured a double catch 32, one endextending from one side of the latch and the other to the other side ofthe latch. This latch is held down by a spring.

Secured to the free end of one of the levers 8 is a cord 33, whichpasses over pulley 9, around pulleys 28, and is then secured to one endof a rod 34, the other end of said rod being secured to the upper end ofthe rightangle triangle lever 29. Secured to the free end of theopposite lever 8 is a cord 35, which passes up over pulley 9, aroundpulleys 28,

and is secured to one end of the said rod 34,

the other end of which rod is secured to the upper end of right-anglelever 29. These cords are crossed between the pulleys 28, so that when Ipull on cit-her one of the cords the gate is thrown from me.

The operation of the gate is as follows: When a vehicle approaches thegate in the direction of the arrow 36, one of the front wheels strikesthe pedal 7 and throws the arm 8 forward to the ground, thus pulling onthe cord 33, bringing the rear end of the frame 27 in the direction ofthe arrow 37, raising the latch 31, and throwing the-gate open, whichswings back, the cross-catch 32 catching over the latch-catch 15. Whenthe vehicle passes through the gateway, it throws the other pedal 7outwardly until it strikes the spring 10, thus throwing the rod 8outwardly until it comes nearly to the ground, or, say,

about one-eighth of a circle from the ground. This operation raises thecross-catch 32 olf of the catch 15 and swings the gate shut, the latch32 sliding up the incline of the latchholder 25 and dropping into thenotch. As the lever 8 just mentioned does not fall quite to the ground,it only raises the crosscatch high enough to escape the catch-holder 15,and as it takes a full quarter-turn to raise the latch 31 out of thelatch-holder 25 the hind wheel of the vehicle does not reopen the gateas it passes over the pedal 7. After the Wheels pass over the pedals thesprings 10 throw them and the rods-811p. When the vehicle comes from theother direction, the operation is just the same, except that the motionsare reversed. If at any time the pedals should get out of order andinoperative, then I may release the ropes from the arms 8 and pulleys 9and carry them over pulleys 4, thus operating the gate by hand, and Iclaim the right to manufacture the gate without the automatic openingand closing device.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. The combination of a swinging gate adapted to be opened and shut bycords-attached to suitable mechanism; aprons, one on each side of thegate secured over part of the roadway and provided with slots; cylindersjournaled immediately under said slots and protruding slightly above thesame; coneshaped coil-springs, one secured onthe upper face of eachapron; pedals, one rigidly secured to each cylinder, said pedals adaptedto be pressed inwardly to the ground, or outwardly onto the saidcoil-springs; levers, on'e rigidly secured to each cylinder, theirfreeends moving up and down with the pedals; posts, one rising from theouter end of each apron; pulleys secured to the inner faces of saidposts; cords secured to the free ends of said levers, passing over saidpulleys, thence around and crossing between rollers secured in a frameon the upper end and rear partofthe gate, thence secured to mechanismadapted to raise the gate-latch and catches, substantially as shown anddescribed and for the purposes set forth.

2. The combination of a swinging gate adapted to be opened and shut bycords attached to suitable mechanism; aprons, one on each side of thegate, secured ever part of the roadway and provided with slots;cylinders journaled immediately under said slots and protruding slightlyabove the same; coneshaped coil-springs, one secured on the upper faceof each apron; pedals, one rigidly secured to each cylinder, said pedalsadapted to be pressed inwardly to the ground, or outwardly onto the saidcoil-springs; levers, one rigidly secured to each cylinder, their freeends moving up and down with the pedals; posts, one rising from theouter end of each apron; pulleys, secured to the inner faces of saidposts; cords, secured to the free ends of said levers, passing over saidpulleys, thence around and crossing between rollers secured in a frameon the upper end and rear part of the gate, thence secured to a rodpivoted toa right-angle triangular lever, pivoted to the gate; saidlever adapted to operate a latch provided with cross-catches,substantially as shown and described and for the purposes set forth.

3. The combination of a swinging gate adapted to be opened and shut bycords attached to suitable mechanism; aprons, one on each side of thegate, secured over part of the roadway and provided with slots;cylinders journaled immediately under said slots and protruding slightlyabove the same; coneshaped coil-springs, one secured on the upper faceof each apron; pedals, one rigidly secured to each cylinder, said pedalsadapted to be pressed inwardly to the ground, or outwardly onto the saidcoil-springs; levers, one rigidly secured to each cylinder, their freeends moving up and down with the pedals; posts, one rising from theouter end of each apron; pulleys secured to the inner faces of saidposts; cords secured to the free ends of said levers, passing over saidpulleys, thence around and crossing between rollers secured in a frameon the upper end and rear part of the gate, thence secured toa rodpivoted to a right-angle triangular lever pivoted to the gate; saidlever adapted to operate a latch provided with cross-catches, adapted tocatch in side catches and said latch adapted to catch in the keeper,secured to the latch-post, substantially as shown and described and forthe purposes set forth.

In testimony whereof I affix my signature in presence'of two witnesses.

JAMES EMANUEL DE LAMAR.

Witnesses:

JAMEs L. BAUGH, MARCUS D. WELoH.

